13133616557 has 2 divisors, whose sum is σ = 13133616558. Its totient is φ = 13133616556.

The previous prime is 13133616499. The next prime is 13133616641. The reversal of 13133616557 is 75561633131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11290975081 + 1842641476 = 106259^2 + 42926^2 .

It is a cyclic number.

It is not a de Polignac number, because 13133616557 - 2⁶ = 13133616493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13133616757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566808278 + 6566808279.

It is an arithmetic number, because the mean of its divisors is an integer number (6566808279).

Almost surely, 2^13133616557 is an apocalyptic number.

It is an amenable number.

13133616557 is a deficient number, since it is larger than the sum of its proper divisors (1).

13133616557 is an equidigital number, since it uses as much as digits as its factorization.

13133616557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 170100, while the sum is 41.

The spelling of 13133616557 in words is "thirteen billion, one hundred thirty-three million, six hundred sixteen thousand, five hundred fifty-seven".